Bobbin-clutching means for rotatable spindles.



PATENTED MAY 9, 1905. W. B. ALLEN.

BOBBIN CLUTGHING MEANS FOR ROTATABLE SPINDLES.

APPLIUATION FILED PEB. 1. 1905.

lnirrnn rains Patented May 9, 1905.

Parleur Orrrfcn,

WlLLlAb/I E. ALLEN, OF SALEM, MASSACHUSETTS. ASSIG'NOR TO SAW YER SPINDLE COMPANY, OF PORTLAND, MAINE.

BUBBIIMMCLUTCHIING MEANS FOR IROTTABLIE SPINDLES..

SPECIFICATION forming'part of Letters Patent No. 789,312, dated May 9, 1905.

Application filed February l, 1905. Serial No. 243,607.

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Be it known that l', W'IL'IJAM E. ALLEN, a citizen of the United States, residing' at Salem, county of Essex, and State of Massachusetts, have invented an Improvement in Bobbin-Clutching Means for .Rotatable Spindles, of which the following description, in connection with the accompanying' drawings, is a specification, like characters on the drawings representing' like parts.

This invention relates to bobl.)inclutcl1ing means of the centrifugally-acting type, wherein the yarn-carrier or bobbin is engaged and caused to rotate with the spinning, twisting, or other rotatable spindle by or through engagement with centrifugally-controlled clutching members mounted to rotate bodily with the spindle and having limited radial movement relatively thereto.

My present invention is designed,primarily, to utilize a sleeve-whirl spindle of well-known type without requiring any great change thereof to adapt it to the clutching means, the sleeve, in accordance with my invention, being' provided with horizontal elongated openings through which loosely project the centrifugally-acting clutching' members.

The various novel features of my invention will be fully described in the following specification and particularly pointed out in the claims appended thereto.

Figure l is a side elevation of a portion of a rotatable spindle with one embodiment of my invention applied thereto. Eig. 2is alongitudinal diametral section thereof on the line 2 2, Fig. 1, a portion of the bobbin being' shown in section. Fig. 3 is a much-enlarged horizontal section on the line 3 3, Fig. 1, to show the general structure and arrangement of the clutching members. Fig. 4f is a perspective view, enlarged, of one of the clutching members viewed from theinner side; and Eig. 5 is a detached view in elevation of a device for preventing displacement of the clutching members.

The rotatable spindle l and its whirl 2, secured to or formed integral with the lower end of a sleeve 3, secured by a driving' fit at its upper end to the spindle, are all of usual construction, and I have also shown the sleeve asprovided with an annular bobbin-rest l above the whirl. This rest may be a metallic ring forced onto the sleeve, and it supports the bobbin at a delinite height upon the spindle. Elongated horizontal openings 5 are made in the sleeve 55 near its upper end, as herein shown, and l have illustrated such openings as rectangular and longer than high. Three of the openings are shown sce Fig'. 3) arranged symmetrically with respect to the axis of the spindle. Into each opening' is loosely inserted a clutching member having a body portion (-3 corresponding substantially to the shape of the opening and sufficiently smaller to easily move in and out, the body portion being' convexed in the 6 5 direction of its length, as shown in Figs. and

si. Means are provided to limitoutward movement of the said members, and herein I have shown the ends thereof bent outward or oppositely to form extensions 7, which project beyond the ends of the adjacent opening' and cooperate with the inner surface of the sleeve 3. Manifestly the extensions limit outward movement of the clutching' members when they are forced outward by centrifugal action when the spindle is running at speed, the members being made of metal stamped or died out to shape or otherwise formed.

Vhen the bobbin B is slipped onto thcspindie, the chamber in the base of the bobbin 8O receives the said members and the latter are thrown out by centrifugal 'force into driving engagement with the walls of the chamber. The bobbin is thus caused to rotate with the spindle, while thc application of the bobbin or its removal is readily effected.

ln order to prevent displacement of the clutching' members when the spindle is rcmoved from its supporting-case and also to limit their inward movement, .l prefer to insert into the sleeve 3 a tubular bushing 8, (shown separately in Eig. 5,) reduced in diameter at its upper portion, as at 9. The

bushing [its tightly in the sleeve or it may be soldered, brazed, or pinned thereto, if desired, while the upper portion 9 projects upward between the spindle and the extensions 7 of the clutching members, permitting the latter to move inward when the bobbin is applied Or dotted, but preventing said members from being displaced.

The construction is simple, cheap, and etticient and can be applied to new spindles or to those already in use byslight addition thereto.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, isww l. The combination with a rotatable spindle, of a depending sleeve secured thereto at its upper end and having an attached whirl, the sleeve having horizontally-elongated, rectangular Openings therein, centritugally-acting bObbin-clutching members having sul stantially rectangular body portions projecting loosely through the openings, to engage and etliect rotation Ot' a bobbin with the spindle, and means On the ends otl said members to engage the sleeve interiorly at the upright ends Ot' the openings to limit outward movement Ot' the clutching members.

2. The combination with a rotatable spindle, of a depending sleeve secured thereto at its upper end and having an attached whirl, the sleeve having horiZOntally-elongated openings therein, centrit'ugally acting' bobbinclutching members having their body portions outwardly conveXed in the direction Ot' their length and projecting' loosely through the the sleeve having elongated, horizontal open- I ings therein, centrifugally acting bobbinclutching members having their body portions outwardly cOnveXed in the direction Ot' their length and projecting loosely through the openings, extensions on the ends of the bodies to engage the inner surface ot' the sleeve and limit outward movement of the clutching members, and a tubular retaining device inserted in the sleeve between the clutching members and the spindle, to limit inward movement of and prevent displacement ot said members.

In testimony whereof l have signed my name to this specification in the presence of two subscribing witnesses.

lVILLIAM E. ALLEN.

lVitnesses:

JOHN C. EDWARDS, ELIZABETH R. MORRISON. 

